Fluid Delivery Device

ABSTRACT

Provided is a mobile fluid pumping system which may include a reservoir and, a pump actuated by a reversible motor. In the first configuration, the reversible motor is operated in a first direction causing a fluid to flow in a first direction and operated in a second direction causing fluid to flow in a second direction thereby providing means to fill a reservoir and then transfer fluid from the reservoir to a vessel or tank. The fluid delivery device provides means to substantially evacuate fluid from any connectors in the system thereby avoiding problems otherwise associated with remaining fluid that may freeze. Further, the device is designed to provide a closed load and unload system meeting ISO 022241.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation-in-part application of Ser. No.13/402,341 filed in the U.S. Patent and Trademark Office on Feb. 22,2012, the entire contents which are incorporated herein.

BACKGROUND

1. Field

Example embodiments relate to a pumping system, a fluid delivery systemthat includes the pumping system, and a method for delivering fluid.

2. Description of the Related Art

NOx is a generic term for the mono-nitrogen oxides NO and NO₂ (nitricoxide and nitrogen dioxide). NOx is produced from the reaction ofnitrogen and oxygen gases in the air during combustion, especially athigh temperatures. For example, NOx may be produced by a combustionengine. NOx is considered a pollutant. Thus, steps have been taken toreduce the production of NOx generated by motor vehicles.

Conventional diesel engines generate, amongst other products, NOx,Oxygen (O₂), and Carbon (C). Vehicles employing diesel engines ofteninclude a system to eliminate or reduce the amount of NOx produced. Forexample, some systems use catalytic conversion reduction (commonlyreferred to as SCR) to reduce NOx emissions.

A conventional system 5 employing SCR is illustrated in FIG. 1, Thesystem 5 includes a particulate filter 10, a decomposition reactor 20having a diesel exhaust fluid (DEF) dosing valve, an SCR catalyst 30,and a DEF storage tank 40 providing DEF to the DEF dosing valve. Theparticulate filter 10 includes a diesel oxidation catalyst 12 and awall-flow filter 14. In the conventional system 5, exhaust from thediesel engine enters the particulate filter 10, over the dieseloxidation catalyst 12, and into the wall-flow filter 14 where C iscontained. O₂ and NO pass through the diesel oxidation catalyst 12 wherethe O₂ and NO are converted into Nitrogen dioxide (NO₂). The NO₂ flowsthrough the wall-flow filter 14 where is reacts with the C to produceCO₂ and NOx. As the exhaust passes out of the particulate filter 10, DEF(in the form of a mist) is sprayed onto a hot exhaust screen of thedecomposition reactor 20, The DEF and the CO₂ form ammonia (NH₃) througha series of reactions. The NOx and NH₃ then pass to the SCR catalyst 30where they react to form N₂ and H₂O thus reducing or eliminating NOxemissions.

As outlined above DEF is important for reducing the emission of NOxproduced through a combustion process, Several conventional vehicles,for example, cars, trucks, and tractors, store DEF in a tank attachedthereto, Typically, the DEF tank is filled/refilled when the vehicle isserviced (for example, when the vehicle's oil is changed). Such anoperation is generally employed in a garage setting. Although there havebeen examples of people using oil or antifreeze jugs to transport DEFfrom a DEF shuttle or barrel to an engine DEF tank, the result has oftenbeen a contamination of the DEF which renders it useless in the processfor decreasing NOx. As of yet, there is no practical system fordelivering DEF to vehicles outside of the garage setting or examples ofa system for delivering DEF that is compliant with ISO 22241 (arelatively recently released standard required by engine manufacturersand EPA regulators).

SUMMARY

Example embodiments relate to a pumping system, a fluid delivery systemthat includes the pumping system, and a method for delivering fluid. Thepumping system and the fluid delivery system may be used to pump anddeliver diesel exhaust fluid (DEF).

In accordance with example embodiments, a pumping system may include atank, a pump, and a valve. The valve may be configured to have a firstconfiguration and a second configuration. In the first configuration,the valve may allow fluid to flow from the pump, through the valve, andto the tank. In the second configuration, the valve may allow fluid toflow from the pump, through the valve, and to an outside structure.

In accordance with example embodiments, a fluid delivery device mayinclude a tank and a pumping system configured to provide fluid to thetank and extract the fluid from the tank.

In accordance with example embodiments, a pumping system may include atank or reservoir, a pump having a motor, wherein the direction of fluidflowing through the pump is determined by the direction of the motor.Employing a reversible motor provides means to move fluid into or out ofthe reservoir. Further, this arrangement provides means to generallycompletely empty the pump and any conduits or connecting members used totransport the fluid and avoid problems that would be caused by freezingof the remaining fluid. It also provides a closed system greatlyreducing chances of contamination.

BRIEF DESCRIPTION OF THE DRAWINGS

Example embodiments are described in detail below with reference to theattached drawing figures, wherein:

FIG. 1 is a view of a conventional NOx reducing system;

FIG. 2 is a schematic view of a pumping system in accordance withexample embodiments;

FIG. 3 is a schematic view of a four-way valve in accordance withexample embodiments;

FIG. 4A is a flow diagram of the pumping system in accordance withexample embodiments;

FIG. 4B is a flow diagram of the pumping system in accordance withexample embodiments;

FIG. 5A is a view of a fluid delivery device in accordance with exampleembodiments;

FIG. 5B is another view of a fluid delivery device in accordance withexample embodiments;

FIG. 6A is a view of a pumping system of the fluid delivery device inaccordance with example embodiments;

FIG. 6B is another view of the pumping system of the fluid deliverydevice in accordance with example embodiments;

FIG. 7A is a flow diagram of the pumping system of the fluid deliverydevice in accordance with example embodiments;

FIG. 7B is a flow diagram of the pumping system of the fluid deliverydevice in accordance with example embodiments;

FIG. 8 is a view of the fluid delivery device in accordance with exampleembodiments; and

FIG. 9 is a view of the fluid delivery device in accordance with exampleembodiments.

FIG. 10 is a schematic of a pumping system in accordance with exampleembodiments.

FIG. 11 is a flow diagram of the pumping system in accordance withexample embodiments.

DETAILED DESCRIPTION

Example embodiments will now be described more fully with reference tothe accompanying drawings, in which example embodiments of the inventionare shown. The invention may, however, be embodied in different formsand should not be construed as limited to the embodiments set forthherein. Rather, these embodiments are provided so that this disclosurewill be thorough and complete, and will fully convey the scope of theinvention to those skilled in the art. In the drawings, the sizes ofcomponents may be exaggerated for clarity.

It will be understood that when an element or layer is referred to asbeing “on,” “connected to,” or “coupled to” another element or layer, itcan be directly on, connected to, or coupled to the other element orlayer or intervening elements or layers that may be present. Incontrast, when an element is referred to as being “directly on,”“directly connected to,” or “directly coupled to” another element orlayer, there are no intervening elements or layers present. As usedherein, the term “and/or” includes any and all combinations of one ormore of the associated listed items.

It will be understood that, although the terms first, second, etc. maybe used herein to describe various elements, components, regions,layers, and/or sections, these elements, components, regions, layers,and/or sections should not be limited by these terms. These terms areonly used to distinguish one element, component, region, layer, and/orsection from another elements, component, region, layer, and/or section.Thus, a first element component region, layer or section discussed belowcould be termed a second element, component, region, layer, or sectionwithout departing from the teachings of example embodiments.

Spatially relative terms, such as “beneath,” “below,” “lower,” “above,”“upper,” and the like, may be used herein for ease of description todescribe one element or feature's relationship to another element(s) orfeature(s) as illustrated in the figures. It will be understood that thespatially relative terms are intended to encompass differentorientations of the structure in use or operation in addition to theorientation depicted in the figures. For example, if the structure inthe figures is turned over, elements described as “below” or “beneath”other elements or features would then be oriented “above” the otherelements or features. Thus, the exemplary term “below” can encompassboth an orientation of above and below. The structure may be otherwiseoriented (rotated 90 degrees or at other orientations) and the spatiallyrelative descriptors used herein interpreted accordingly.

Embodiments described herein will refer to plan views and/orcross-sectional views by way of ideal schematic views. Accordingly, theviews may be modified depending on manufacturing technologies and/ortolerances. Therefore, example embodiments are not limited to thoseshown in the views, but include modifications in configurations formedon the basis of manufacturing process. Therefore, regions exemplified inthe figures have schematic properties and shapes of regions shown in thefigures exemplify specific shapes or regions of elements, and do notlimit example embodiments.

The subject matter of example embodiments, as disclosed herein, isdescribed with specificity to meet statutory requirements. However, thedescription itself is not intended to limit the scope of this patent.Rather, the inventors have contemplated that the claimed subject mattermight also be embodied in other ways, to include different features orcombinations of features similar to the ones described in this document,in conjunction with other technologies. Generally, example embodimentsrelate to a pumping system, a fluid delivery system that includes thepumping system, and a method for delivering fluid. In exampleembodiments the pumping system may pump DEF, the fluid delivery systemmay deliver DEF, and the method may be a method for delivering DEF.Example embodiments, however, are not limited thereto as the pumpingsystem may pump fluids other than DEF, for example, diesel fuel,gasoline, water, cleaning fluids, etc.

FIG. 2 illustrates a pumping system 50 in accordance with exampleembodiments. As shown in FIG. 2, the pumping system 50 includes a pump55, a valve 60, and a tank 65 that may be a deionized tank, for examplea dionized tank purified to ISO 22241 standard. In example embodiments,the pump 55 may be connected to the valve 60 via a first connectingmember 56 and a second connecting member 57. In example embodiments, thefirst connecting member 56 may be configured to transport fluid, forexample, DEF, from the pump 55 to the valve 60. For example, the firstconnecting member 56 may be a hose, a pipe, or a tube. In exampleembodiments the second connecting member 57 may be configured totransport fluid, for example, DEF, from the valve 60 to the pump 55. Forexample, the second connecting member 57 may be a hose, a pipe, or atube. In example embodiments, the tank 65 may be connected to the valve60 by a third connecting member 58. The third connecting member 58 maybe configured to transfer fluid, for example, DEF, between the tank 65and the valve 60. For example, the third connecting member 58 may be ahose, a pipe, or a tube. In example embodiments, a fourth connectingmember 59 may connect the valve 60 to an external structure 75. Inexample embodiments, the external structure 75 may be a tank, thoughexample embodiments are not limited thereto. The fourth connectingmember 59 may be configured to transport fluid, for example, DEF to andfrom the valve 60. For example, the fourth connecting member 59 may beconfigured to transport fluid from the valve 60 to the externalstructure 75 or to transfer fluid from the external structure 75 to thevalve 60. In example embodiments, a connecting structure 70 may beattached to an end of the fourth connecting member 59 to facilitate aconnection between the fourth connecting member 59 and the externalstructure 75. For example, the connecting structure 70 may be a coupleror a nozzle. For example, the coupler could be an RSV coupler and thenozzle could be an auto trip nozzle.

In example embodiments, an end of the fourth connecting member 59 mayinclude a fitting 72 that is configured to attach the connectingstructure 70 to the fourth connecting member 59. For example, thefitting 72 may be able to connect to more than one type of connectingstructure 70 thus allowing for interchangeable connecting structures toattach to the end of the fourth connecting member 59. For example, thefitting 72 may allow for a user to attach an auto trip nozzle to the endof the fourth connecting member 59 in the event pumping system 50 isused to dispense a fluid, for example, DEF, or alternatively allow theuser to attach a coupler to the end of the fourth connecting member 59in the event the pumping system 50 is used to collect a fluid from theexternal structure 75.

Although example embodiments of the pumping system 50 may include thefirst, second, and third connecting members 56, 57, and 58 tointerconnect the pump 55, the valve 60, and the tank 65, exampleembodiments are not limited thereto. For example, rather than providingthe third connecting member 58 to connect the valve 60 to the tank 65,the tank 65 may be directly connected to a nozzle on the valve 60. Thus,it would not be necessary to connect the valve 60 to the tank 65 via thethird connecting member 58. Likewise, the pump 55 may be directlyconnected to a nozzle of the valve 60, thus, at least one of (or bothof) the first and second connecting members 56 and 57 may not benecessary to implement the above pumping system 50.

In example embodiments, the pump 55 may be an electric pump which may bepowered by a battery, for example, a deep-cycle marine battery. However,example embodiments are not limited thereto. For example, the pump 55may be an electric pump which is powered by a battery of an automobile,for example, a truck, tractor, or car. As another example, the pump 55may be an electric pump which is powered by an AC source. For example,the pump 55 may be connected to wall socket of a conventional building.In addition, the pump 55 is not limited to an electric pump. Forexample, the pump 55 may be powered by a gasoline engine, a dieselengine, or by hand.

In some embodiments, the pump 55 may comprise a first side 55 a and asecond side 55 b and may be powered by a reversible motor 200. Thedirection of the motor 200 determines the direction of flow of fluidbeing pumped. See FIG. 10.

In example embodiments, the valve 60 may be a four-way valve. Althoughfour-way valves are relatively common, a brief description thereof willbe provided for the sake of completeness. Referring to FIG. 3, afour-way valve (sometimes called a four-way cock) may be a fluid controlvalve having a body and a plug 61. In example embodiments, the body mayhave a first port 60-1, a second portion port 60-2, a third port 60-3,and a fourth port 60-4 that may be equally spaced around a valvechamber. The plug 61 may have two passages 60A and 60B to connectadjacent ports. In example embodiments, the plug 61 may be cylindricalor tapered, or a ball, though example embodiments are not limited toonly a cylindrical or tapered or ball configuration.

In FIG. 3, the valve 60 is shown as having three configurations: (A),(B), and (C). In configurations (A) and (C) fluid may flow through thevalve 60 whereas, in configuration (B), flow is prevented from flowingthrough the valve 60 since the passages 60A and 60B are not aligned withany of the first through fourth ports 60-1, 60-2, 60-3, and 60-4. Inexample embodiments, fluid may enter the valve 60 through the third port60-3 and leave the valve 60 through the first port 60-1 when the valveis in either configuration (A) or (C). In configuration (A), fluidenters the third port 60-3, passes through the second passage 60B, andexits the valve 60 through the fourth port 60-4 whereas in the thirdposition (C) fluid entering the third port 60-3 passes through the firstpassage 60A exits the valve 60 through the second port 60-2. Inconfiguration (A), fluid leaving the first port 60-1 entered the valve60 through the second port 60-2 whereas fluid leaving the first port60-1 in the third configuration (C) entered the valve 60 through thefourth port 60-4.

FIGS. 4A and 4B represents fluid flow diagrams of the pumping system 50,wherein the valve 60 is a four-way valve similar to that illustrated inFIG. 3. More specifically, FIG. 4A illustrates fluid flowing through thesystem 50 when the valve 60 is in configuration (A) and FIG. 4Billustrates fluid flowing through the system 50 when the valve 60 is inconfiguration (C).

As shown in FIG. 4A, when the valve 60 is in configuration (A) fluid maybe drawn from the tank 65 to the valve 60 where it is drawn to the pump55 and pumped back to the valve 60 where the fluid is then directed tothe structure 75. As noted above, the structure 75 may be a tank, forexample, a tank of a tractor or a truck. Thus, when the valve 60 is inconfiguration (A) the pumping system 50 may be used to pump fluid fromthe tank 65 to the structure 75. In FIG. 4B, however, when the valve 60is in configuration (C), fluid may be drawn from the structure 75,through the valve 60, and to the pump 55 where it is pumped to the valve60, and then to the tank 65. Thus, when the valve 60 is in configuration(C), the pumping system 50 may be used to pump fluid from the structure75 to the tank 65. Accordingly, the pumping system 50 according toexample embodiments may be used to either fill the tank 65 with a fluidobtained from an outside structure 75, for example, a DEF tote, orsupply fluid from the tank 65 to an outside structure 75, for example, aDEF tank of a tractor, car, or truck.

Example embodiments illustrate a novel and useful pumping system thatmay be used to both fill a tank of the pumping system with fluid andpump the fluid from the tank to a structure. Such a novel system isadvantageous over conventional systems that utilize different pumps forfilling a tank with a fluid and extracting fluid from the tank. Althoughexample embodiments are illustrated as using a four-way valve in linewith a pump, the invention is not limited thereto as other suitablevalves and pumps may be used. For example, the system could use areversible pump rather than a unidirectional pump and a four way valve.

FIGS. 10 and 11 show embodiments of the system wherein a pump 255 ispowered by the reversible motor 200. Upon reversal of the motor 200(which may be a direct current motor which is reversed by a reverse inthe current) the direction of flow of the fluid is also reversed. Atwo-way valve 260, which may be open or closed, may be employed togovern the flow while the motor's direction governs the direction offlow of the fluid, however, a two-way valve is not necessary for theoperation of this embodiment. This arrangement of elements is providedto move DEF or other fluid to or from a reservoir 265. The fluid may bemoved from the reservoir 265 through conduits or connecting members 256,257 and a connection device 160 which may include a nozzle. Theconnection device 160 may facilitate transfer of the fluid from thesystem to a tank or other container such as a storage fuel tank or afuel tank associated with an engine and/or a vehicle where it may beused as a fuel. In some embodiments, the pump 255 can be used to removeremaining fluid from the conduits to avoid damage from freezing. Ifdesired, the pump 255 and motor 250 can be used to remove fluid from thereservoir, as well. Clearing the conduits reduced or nearly eliminatescontamination possibilities.

FIGS. 5A and 5B are perspective views of a fluid delivery device 100 inaccordance with example embodiments. The fluid delivery device 100 maybe used to transport fluid, for example, diesel exhaust fluid (DEF) fromone location to another. As shown in FIGS. 5A and 5B, the fluid deliverydevice 100 may resemble a trailer in that one end of the fluid deliverydevice 100 may include a set of wheels 102 while another end of thefluid delivery device 100 may include a connecting device 104, forexample, a ball/hitch connection or chains, for connecting the fluiddelivery device 100 to an automobile such as a truck, tractor, or car.Example embodiments, however, are not limited thereto. For example,rather than providing wheels 102 at the back end of fluid deliverydevice 100, skids may be provided instead, or in the alternative,tracks, such as those found on tanks, may be employed. In addition, thefluid delivery device 100 is not limited to a trailer configuration asthe fluid delivery device 100 may be configured to be part of a selfpropelled automobile. In the alternative, the fluid delivery device 100may instead be part of a static nonmoving structure.

As shown in FIGS. 5A and 5B, a compartment 120 may be provided in thefluid delivery device 100. The compartment 120, for example, may beprovided near one end of the fluid delivery device 100. Exampleembodiments, however, are not limited thereto as the compartment 120 maybe provided at another location of the fluid delivery device 100, forexample, near a middle thereof. In example embodiments the compartment120 may include at least one door to allow a user to access thecompartment 120. For example, the at least one door may include a firstdoor 122 and a second door 124 which may be hinge connected to the fluiddelivery device 100. Thus, access to the compartment 120 may be obtainedfrom two directions by opening at least one of the first and seconddoors 122 and 124. Example embodiments, however, are not limited to twodoors. For example, only one door may be provided to gain access to thecompartment 120 or more than two doors may be provided. Furthermore, thedoors need not be hinge connected to the fluid delivery device 100. Forexample, the doors may be entirely removable or slidingly attached tothe fluid delivery device 100.

In example embodiments, a tank 110, for example, a deionized tank(purified to ISO 22241 standard), may be provided adjacent to thecompartment 120. For example, as shown in FIGS. 5A-5B, the tank 110 maybe provided at a side of the compartment 120. Example embodiments,however, are not limited thereto. For example, rather than providing thetank 110 behind the compartment 120 as shown in FIGS. 5A-5B, the tank110 may be provided on top of the compartment 120, below the compartment120, in front of the compartment 120, or even in the compartment 120.Alternatively, an interposing structure, for example, anothercompartment, may be provided between the compartment 120 and the tank110. In example embodiments the tank 110 may be configured to storediesel exhaust fluid (DEF). Thus, the tank 110 may be comprised of amaterial which may be suitable for storing the diesel exhaust fluid(DEF). For example, the tank 110 may be comprised of stainless steel.

In example embodiments, a pumping system 130 (see FIGS. 6A and 6B) maybe provided to move fluid, for example, diesel exhaust fluid (DEF), toor from the tank 110. In example embodiments, the tank 110 may beconsidered part of the pumping system. The pumping system 130, forexample, may include a pump 132, a valve 134, the tank 110 and fluidtransporting members, for example, hoses, to transport fluid through thepumping system 130. For example, in example embodiments, thetransporting members may include a first hose 136 to move fluid from thepump 132 to the valve 134, a second hose 137 to move fluid from thevalve 134 to the pump 132, a third hose 138 to move fluid from the valve134 to a fourth hose 139 which may be wrapped around a hose reel 150.Also, though not shown in FIGS. 5A-6B, the transporting members mayfurther include a fifth hose which may be provided to move fluid betweenthe valve 134 and the tank 110.

In other embodiments (see FIGS. 10 and 11) the pumping system 130 maycomprise pump 255, a reversible motor 200, a reservoir 265, and,optionally, a valve 260. When the motor 200 is run in a first direction,the DEF or other fluid flows a first direction and when the motor 200 isrun in a second direction, the DEF or other fluid flows in a seconddirection. The flow (but not the direction) may be controlled by valve260 which may be adjusted between and including an open position and aclosed position. However, the valve 260 is not necessary to operate thesystem. The pumping system 130 of this embodiment may be used to moveDEF or other fluid between a reservoir 265 incorporated in the mobilefuel pumping system 130 and a tank 275 which may be outside of themobile fuel pumping system. The tank 275 may be a movable tank such ason a vehicle or it may be stationary such as a fuel storage tank. Thepump 255 may be run to void any conduit or connecting member 256 leadingto or from the reservoir 265, any conduit or connecting member 258leading to and from the pump 255, and the pump 255 itself to drasticallyreduce or eliminate problems that would otherwise be caused by fluidfreezing. If needed, the pump 255 can be used to evacuate the reservoir265, as well. The mobile fuel pumping system 130 may comprise a trailerhaving a hookup for associating the trailer with a motorized vehicle orthe system may be permanently or detachably affixed to a motorizedvehicle such as a truck.

In example embodiments, structures may be provided between the varioustransporting members to facilitate connectivity of the pumping system.For example, various quick connect structures or couplers may beinterposed in the various transporting members to connect thetransporting Members to the pump 132 and/or the valve 134, 260. Inaddition, some of the transporting members may not be necessary. Forexample, in example embodiments, rather than providing a transportmember between the valve 134 and the tank 110, an extension of the valve134 may be threaded into a wall separating the compartment 120 from thetank 110 to allow for fluid in the tank 110 to enter the valve 134directly. In example embodiments, the transport members are not limitedto hoses. For example, rather than providing hoses, tubing or pipes maybe provided to transport fluid to or from the pump 132, 255 to the valve134, 260 and to or from the valve 134, 260 to the pump 132, 255.

In example embodiments, the pump 132 may be an electric pump which maybe powered by a battery, for example, a deep-cycle marine battery, whichmay or may not be stored in the compartment 120. However, exampleembodiments are not limited thereto. For example, the pump 132 may be anelectric pump which is powered by a battery of an automobile, forexample, a truck, tractor, or car that may be used to move the dieselexhaust fluid (DEF) delivery device 100. As another example, the pump132 may be an electric pump which is powered by an AC source. Forexample, the pump 132 may be connected to wall socket of a conventionalbuilding. In addition, the pump 132 is not limited to an electric pump132. For example, the pump 132, 255 may be powered by a gasoline ordiesel engine or a DC motor 200 which may be reversed if the current isreversed. Further yet, the pump may be a manual pump. In exampleembodiments, the valve 134 may be a four-way valve similar to thefour-way valve 60 of the pumping system 50 or, alternatively, it may bea two way valve 260, especially when the motor 300 is a reversible motorthereby eliminating the need for a 4-way valve. When a two-way valve 260is employed its purpose is to allow flow or stop flow; the directionflow is controlled by the motor 200 rather than the valve 260. In otherembodiments with the reversible motor 200 no valve 260 is employed atall. The system is closed such that the motor can be run to empty theconduits 258 and 257 and the pump itself leaving nothing to freeze andno contamination.

In example embodiments, one of said hoses or conduits may have an endfitted with a connection device 160 to facilitate a connection betweenthe hose and an outside structure. For example, the connection device160 may be an auto trip nozzle which may be used to fill a standard DEFtank of a truck or a tractor. In the alternative, the connection device160 may be a coupler, for example, an RSV coupler, that may be used toconnect the hose to an external structure 170, for example, a tank or atote.

In example embodiments, the pumping system 130 arranged in the fueldelivery device 100 may operate similar to the pumping system 50. Thus,only a brief description of the operation of the pumping system 130 willbe provided. In example embodiments, the valve 134 may be a four-wayvalve similar to the four-way valve 60 of the pumping system 50. Thus,the valve 134, like valve 50, may have a first configuration whichcontrols a direction of fluid flow as shown in FIGS. 7A and 7B. In FIG.7A, for example, the valve 134 may be in a first configuration whichallows fluid to be drawn from the tank 110 to the valve 134 where it maybe pumped through pump 132 and returned to the valve 134 where the fluidis then transported to the connection device 160 mounted on the fourthhose 139. As noted above, the connection device 160, for example, may beauto trip nozzle. Thus, when the valve 134 is in the first configurationthe pumping system 130 may be used to pump fluid from the tank 110 tothe connection device 160. As shown in FIG. 7B, however, when the valve134 is in a second configuration, fluid may be drawn from through theconnection device 160, through the valve 134, through the pump 132,returned to the valve 134, and then to the tank 110. Thus, when thevalve 134 is in a second configuration, the pumping system 130 may beused to pump fluid from the connection device 160 to the tank 110.Accordingly, the pumping system 130 according to example embodiments maybe used to either fill the tank 110 with a fluid, for example, DEF,passing through the connecting device or supply fluid from the tank 110to the connecting device 160.

As shown in FIGS. 10 and 11, when a reversible motor 200 is employed torun the pump 255, the motor 200 may be reversed thereby causing thedirection of flow of the fluid to reverse. A two-way valve 260 may beincluded to allow or disallow flow, however this valve does not dictatethe direction of fluid through the valve. In this embodiment the systemmay be used to either fill reservoir 265 with a fluid from tank 275 orto supply fluid from the reservoir 265 to another vessel or tank 275,Similarly, the system may be used without a valve 260; the use of areversible motor 200 in a closed system provides means for completeevacuation of freezable fluid from the first hose or conduit 256 orfirst connecting member and the second hose 258 or second connectingmember for reducing contamination to levels acceptable under ISO 22241and to avoid issues caused by freezing.

FIG. 8 shows the fourth hose 139 being pulled out of the compartment120, In FIG. 8, the fourth hose 139 is fitted with an auto trip nozzleas the connection device 160. An activation of the pump 132 may causefluid, for example, DEF fluid, to be drawn from the tank 110 and to theconnection device 160 as shown in FIG. 7A, Thus, a user may utilize thefluid delivery device 100 to deliver fluid via the pumping system 130 toan outside structure, for example, a tank of a tractor or a truck.Similar embodiments may be employed with the reversible motor 200versions as well. Example embodiments, however, are not limited to theabove use. For example, rather than using an auto trip nozzle as theconnection device 160, a user could use, instead, a coupler, forexample, an RSV coupler, as the connection device 160. Such a couplermay be used to connect fourth hose 139 to a tote 170 (see FIG. 9) whichmay be filled with fluid, for example, DEF. Thus, an activation of thepump 132 may cause fluid, for example DEF fluid, to be drawn from thetote 170, through the pumping system 130, and to the tank 110 as shownin FIG. 7B.

In short, example embodiments provide a fluid delivery device 100 whichincludes a pumping system 130. The pumping system 130 may beincorporated into a device, such as a trailer or an automobile, to formthe delivery device. In example embodiments, the pumping system 130includes a pump 55 or 255 and a tank 65 or reservoir 265 which is mobilesince the delivery device 100 may be configured as a trailer or anautomobile. Thus, the delivery device may be used to transport a fluid,for example, DEF, to different locations. The delivery device alsoincludes a fluid transporting members which may be used to move fluidthrough the pumping system and to a structure such as a tank or vessel275 which is outside of the fluid delivery device 100. One of the fluidtransporting members may be fitted with a connection device, such as anauto trip nozzle, to facilitate a connection between the pumping system130 and an external structure 275 which may be a tank of a car, truck,or tractor. In the alternative, the connection device may be a coupler,such as an RSV coupler, to connect the pumping system to a source of thefluid, for example DEF, in order to allow the pumping system 130 to fillthe tank. As configured, a same pump may be used to both fill thereservoir 265 of the pumping system or dispense the fluid to an outsidestructure, vessel or tank 275.

The instant invention has considerable advantages over the prior art,especially with respect to delivering DEF. For example, ISO 22241requires a closed load and unload system to eliminate contamination. Theinstant invention ensures DEF may be delivered from a closed shuttle toa deionized (purified to ISO 22241 standard) tank that may be on atrailer. By using the 4-way valve in a fill position or by employing areversible motor to effect change in flow direction, DEF may betransferred to a DEF tank of an engine or vehicle being filled whilestaying within a closed noncontaminated environment.

Example embodiments of the invention have been described in anillustrative manner. It is to be understood that the terminology thathas been used is intended to be in the nature of words of descriptionrather than of limitation. Many modifications and variations of exampleembodiments are possible in light of the above teachings. Therefore,within the scope of the appended claims, the present invention may bepracticed otherwise than as specifically described.

What we claim is:
 1. A mobile fluid pumping system comprising a pumphaving a reversible motor, a reservoir, a first connecting memberproviding fluid communication between a first side of the pump and areservoir, and a second connecting member providing fluid communicationwith a second side of a pump said system providing a closed load andunload system.
 2. The pumping system of claim 1 further comprising atank which may be in fluid communication with the second connectingmember wherein operating said reversible motor in a first directioncauses fluid from the tank to be pumped through the second connectingmember and the first connecting member to the reservoir.
 3. The systemof claim 1 wherein operating said motor in a second direction causesfluid to be pumped from the reservoir through the first connectingmember.
 4. A mobile fluid pumping system comprising a reservoir andmeans to cause fluid to flow, said means to cause fluid to flowcomprising a pump and a reversible motor, said reservoir and the pump influid communication.
 5. The system of claim 4 wherein said reversiblemotor is operated in a first direction to cause fluid to flow into saidreservoir and operated in a second direction to cause fluid to flow outof said reservoir.
 6. The system of claim 5 further comprising a tankwherein operating said reversible motor in the second direction causesfluid to flow out from said reservoir to said tank.
 7. An assembly forproviding a mobile fluid reservoir, said assembly comprising a closedsystem having a pump comprising a first side and a second side, areversible motor, a reservoir, a first conduit between said reservoirand the first side of the pump, and a second conduit leading away fromthe second side of the pump wherein said pump moves fluid in a firstdirection through said first and second conduits when said motoroperates in a forward manner and moves fluid in a second directionthrough said first and second conduits when said motor operates in areverse manner.
 8. The assembly of claim 7 wherein said reversible motorcomprises a direct current motor.
 9. The assembly of claim 7 furthercomprising a two-way valve to alternatively block or allow fluid flow.10. The assembly of claim 7 further comprising a tank wherein said pumpmoves fluid from said reservoir to the tank.
 11. The assembly of claim10 wherein said pump moves fluid from said tank to the reservoir. 12.The assembly of claim 10 wherein said reversible motor comprises adirect current motor operating in a first direction to cause the pump tomove fluid from the reservoir to the tank and in a second direction tocause the pump to move fluid from the tank to the reservoir.
 13. Theassembly of claim 1 wherein said pump can be operated to void fluid fromsaid first connecting member, said second connecting member, and saidpump.